Assigfqk toherbert m



A. J AK OVLEFF. AUTOMOBILE CRADLE.

M I APPLICATION FILED OCT. 25, I920. 1,425,59.

WITNESS 3 49/ ATTORNEYS Patented Aug. 15, 1922.-

3 SHEETS-SHEET I.

A. JAKOVLEFF. v AUTOMOBILE CRADLE. I 5 APPLICATION FILED OCT. 25. 1920. I 1,425,859, Patented Aug. 15,1922...

. I 3 SHEETS-SHEET Z 77 7' :Zjf-QWELLEL I I I l WITNESS G INVENTOR ATTORNE'YS A. JAKOVLEFF.

AUTOMOBILE CRADLE. APPLICATION FILED on. 25, 1920.

Patented Aug. 15, 1922;

I 3 SHEETS-SHEET 3- 0 w z I x) h A N [I I:

' N to ti M *1 r I a v l E g L r v I N ,J n m k x I N l I .INVENTOR L \9 600095000 0 flDY/SJWOVLLf/ I l I m I N 1% I N wwffijmq :4 N 'dATroRNEYs a M TATES PATQT ALEXIS JAKovtErr, or SAN FRANCISCO, camronma nssre vonmo HERBERT sH'IRnK, or SAN FRANCISCO, cnmronmef f AUTOMOBILE CRADLE.

Specification ofLettersPatent. 'Pamflt g .15 1922 Application filed October 25, 1920. Serial No. 419,409.

i To aZZ whom it may concern:

elevation of the same. elevation, showing the automobile raised An object of the invention is to provide a cradle'wherewith an automobile may readily be raised and turned about a longitudinal axis passing through its center of mass or gravity. Anotheriobject is the provision of a cradle of the type described characterized by adjustability to different cars and by ease and rapidity ofits application to a car and its operation with the cartherein.

Other objects of the invention together,

with the'foregoing will be set forth in the following description of the preferred emhodiment'of means for practicing the same,

which: isillustrated in the drawings accompanying and formng part of the specification. It is to be understood that I do not limit myself to the showing made by the said descriptions and drawings, as I may adopt variations of my preferred form within the scope of my invention as set forthin the claims.

In the drawings, Fig. 1 is a side elevation of one of my cradles, showing an automobile thereimbut notraised. Fig. 2 is a front Fig. 3 is a front from the floor.- Figs. 4 and 5 are plan and elevation respectively; of a p'ortionojf the "device. Fig. 6 is a side elevation of two of S mycradles supportinglan automobile in. positionto be turned about an'aXis passing substantially through its center of gravity.

I The cradle of myinvention comprises two similar mechanisms, one for each end of the vehicle. Eachmechanism comprises a frame formed of a horizontal element 2 mounted on wheels of rollers 3' so that it is quite close to the floor, and having vertical posts 4 rigidly fixed thereon. Channel beams are preferf'ably used for the frame' members and the posts are disposed with the open sides'facing eachother so that aslide-way is provided in which the rectangular block ,6 is adapted to Journaled between cross members? fixed between the parts is aworm wheelS operated by the worm 9 rotatably carried in brackets on the posts. squared to fit the socketed end'of the detachable crank 11 Threaded through the center of the worm wheel isa screw spindle 12,

The end of the worm is on the'upper end of which ispivotallyats tached the ,saddle 13"in which the block 6 I rests. Rotation of the worm wheellby the crank raises and lowers the-blocl(;. Rotatably journaled in the block. (another worm wheel 16 controlled'by the =worm, 17

arranged in the top of the block. The worm i 17 is also provided with a squared end fitting '70 the crank 11, which is connectedrto the worm through an aperture].8 in the right hand (Fig.2) post. v Thustheworm wheel 1 6 can I I be rotated only when the block is raised-to such height thatthefend of theworm17 registers with the aperture 18. I y I Mounted for limited pivotal movement in the wormwheel 16 is arm .19.; the outerend collar 21 rotatable thereon. Tension links 22 including tum fbuckles 23 for varying ofwhich (right of Fig.1 is prpvided with. a

their lengths, arepivoted to the, collar and to l the frame. Pivot-ed onithe oppositeor 1111161. end of the arm, asbest shown in Figs.

4 and 5 is a yoke 24. Lugs 26 on boltli'the arm and yoke connected a screw2? 0ppositely threaded in blocks 28 rotatably mounted in the lugs. provide means for varyiug the angular relation between the fiyolre and its supporting arm.

:The ends of the yoke are provided with 'wheje] seats 29, the bottom of each of which is, in the form of a wide angle V... One side of the bottom normally rests on the floorasyshown in- Fig 1, so as to facilitatethe seatingof the automobile wheeltherein. f

Rotatablymounted. in lugs onthe outside of each wheel seat is a block 31in whicha screwterminating in. a crank 32 isthreaded.

A chain 33 is connected to the screw by a swivel headge and at the other endis'provided with a hook 36 adapted to be engaged with the frame 37 of the vehicle. This structureprovides an adjustable means for locking the wheels of thevehicle in their seats. When it is desired to work on the under side of an automobile, the front vwheels of" the car are run upon the wheel seats of one part ,ofmy cradle, and the chains 33 attached aXis.

and tightened. The worm 8 is then turned to raise the block 6 enough to lift the wheel seats under the front wheel clear of the floor. The other or rear half of the cradle is then pushed up close to the rear wheels, and the car backed onto the rear wheel seats. In this movement of the car, the forward cradle rolls backwardly with the car on its wheels 3. The chains on the rear cradle are then attached and tightened and both worms 8 rotated, until the end of the worm 17 in each cradle is alined with the aperture 18, when the arms 19 will be horizontally alined in an axis 38 shown in Fig. 6, passing through *or slightly above the center of gravity of the car. Rotation of the screw 27 to vary the angular relation'of the arm 19 and yoke 24 permit the cradle to .be adjusted to different cars in which the height of the center of gravity may vary. The chains 33 should next be tightened once more to take up any slack which may result from rotary move ment of the wheels during the raising of the car. The cranks 11 may now be inserted through the apertures 18 and the worm wlreels l6 rotated, care being taken to rotate each substantially the same amount.

'The arms 19, the connected yokes and the car supported thereon, are thus turned about the axis 38 so as to expose the under portions of the car and permit ready access thereto.

It will be understood that with variations in the length of the tension links, the arm is brought to horizontalposition at different heights. There is therefore a series of apertures 18 in the posts f, the adjustment of the length of the tension link being such as to secure a horizontal position of the arm when the end of the worm 17 is alinedwith the corresponding aperture. This adjustment will not be used frequently but is preferably in eluded to widen the usefulness of the cradle.

I claim:

l. vehicle cradle comprising a frame,

an arm mounted on said frame, wheel seats arran ed on said arm and normally resting on the floor whereby the wheels of the vehicle at one end may be rolled off. of the floor upon the seats, means for moving said arm to raise said wheel seats, and means for turning said arm. about a horizontal axis.

2. A. vehicle cradle comprising a frame, a block slidably mounted in said frame, an arm mountedin said block, wheel seats arranged on said arm and normally resting on the floor'whereby the wheels of the vehicle at one end maybe rolled off of the floor to lift .said arm and wheel seats, and means for turning said arm about a horizontal 3. Aveliiele cradle comprising a frame, a

block slidably mounted in said frame, an arm pivotally mounted in said block 'intermediate its ends, means connecting one end of the arm to said frame, wheel seats normally resting .on the floor arranged at the other end of said arm, means for raising said block to lift said arm and wheel seats, and means for turning said arm in said block about a horizontal axis.

42. A vehicle cradle comprisin a frame, a block slidably mounted in sai frame, an arm pivotally mounted in said block intermediate its ends, means connecting one end of the arm to said frame, means for ad j usting the length of said connecting means, wheel seats normally resting on the floor arranged at the other end of said arm, means for raising saidblock to 'lift said arm and wheel seats, and" means for turning said arm in'saidblock about a horizontal axis.

' 5. A vehicle cradle comprising a frame, an arm mounted on said frame, a yoke pivoted on said-arm, wheel seats normally resting on the floor arranged on said yoke, means for adjusting the angle between yoke and arm, means for moving said arm to raise said wheelseats, and means for turning said arm and yoke about a mediate. its ends, means connecting one end.

of the arm to said frame, means for adjustingthe length of said connecting means, a

yoke pivoted on the other endof said arm, wheel seats normally resting on the floor arranged on said yoke, means for adjusting the angle between yoke and arm, means for 7. A. vehicle cradle comprising a frame,

an arm mounted on said frame, wheel seats arranged onfsaid arm and normally resting on the floor whereby the wheels of the vehicle at one end may be rolled off of the floor upon the seats, means for moving'said I arm to raise the vehicle' supporte'd in said turning said arm about a horizontal axis.

8. A vehicle cradle comprising a frame,"

a block slidably mounted in said frame, an

arm mountedin said block for pivotal movement therein and for rotary movement about an axis at right angles. to the axis of the pivotal movement, means for raising and lowering ,saidblock, to raise and lower said arm, and wheel seats arranged on said arm. n 9, A vehicle cradle comp'rismg a frame, ablock'slidably mounted 1n said frame, an

arm. mounted in said block for pivotal move= arranged at the other end of said arm, and means for moving said block to raise and lower said arm.

10. A vehicle cradle comprising a frame, a block slidably mounted in said frame, a Worm Wheel journaled in said block, a Worm in said block for controlling the rotation;

azblock slidably mounted in said frame,

Worm Wheel journaled in said block, a Worm in said block for controlling the rotation of said Worm Wheel, an arm pivoted intermediate its ends in said Worm Wheel, means for connecting one end of said arm to said 20 frame, means for raising and-lovvering'said block, Wheel seats arranged on the othera,

end of said arm, and'means for retaining the vehicle Wheels in'said seats.

set my hand. I v y In testimony whereof, I have hereunto ALEXIS JAKOVLEFF. l 

